Backwards compatibility should be a standard at this point. We all ate the silly excuses when going from PS3 to PS4 about the PS3's architecture and cell processing making backwards compatibility something they would need to skip, but there's really no reason that most games shouldn't work when going from PS4 to PS5, though.
I'm annoyed at the nickle and diming from accessories, but that's felt like a standard in the industry for quite a long time now.
It may only be me, but I'm decidedly less excited for the next console generation more so then any other new generation before. Maybe it's because of the current climate of the industry and it's neverending political drama, or maybe because I don't really feel the jump in this generation will be anywhere as noticeable as ones in the past. Sure, games will look prettier, but at this point I'm really more interested in games with unique, stories, gameplay and visuals more than hyper-realism.